Insulator



(No Model.)

0. L. TRAVIS.

INSULATOR.

No. 336,828. Patented Feb. 23, 1886.

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ihvrrnn STATES PATENT Orrrcn.

CHARLES L. TRAVIS, OF MINNEAPOLIS, MINNESOTA.

lNSULATOR.

SPECIFICATION forming part of Letters Patent No. 336,828, dated February23, 1886.

Application filed November 14, 1885. Serial No. 182,804.

To ctZZ whom it may concern.-

Be it known that 1, CHARLES L. TRAVIS, of Minneapolis, county ofHennepin, and State of Minnesota, have invented a new and usefulImprovement in Insulators, of which the following is a full, clear, andexact description, reference being had to the accompanying drawings,making part of this specification.

My invention relates to animprovement in means for insulating electriclamps or wires from their supporting and adjusting devices; and itconsists in the employment of an insulate-d hook or link adapted to beinterposed between the supporting cord, wire, or device and the lamp, ashereinafter fully set forth.

In the accompanying drawings, Figure l represents a perspective view ofan electric lamp with my improvement applied, showing also thesupporting and adjusting devices; and Figs. 2 and 3 are transversesectional views illustrating my insulator-hook.

A represents the supporting rod or wire by means of which the lamp issuspended or upheld in the desired position. This supporting wireextends between two uprights or poles of any usual or preferredconstruction, and a traveling pulley-block, B, is mounted thereon. Saidblock B is of ordinary form, being composed of two cheek-plates havingtwo grooved revolving pulleys interposed-an upper one, I), which isadapted to travel upon the supportingwire, and a lower one, I), overwhich the cord that supports the lamp passes.

0 represents the lamp-support, which may be a cord composed either ofhemp or flexible wire, as preferred. Said supporting rope or wire issecured at one end to one of the uprights or posts between which thewire or support A is stretched, and, passing through the pulley-block B,over the lower pulley, b, has the lamp secured to it, as hereinafterexplained.

D represents the adjusting-cord or flexible wire rope, secured at oneend to the pulleyblock B by means of a yoke, d, spanning said block, orin any other suitable manner. From this point of attachment saidadjusting-cord 1) extends to the upright or pole opposite that .to whichcord 0 is attached, and, passing over a pulley thereon, extends downwardto and is adapted to be wound upon a reel 01: Windlass,

(No model.)

1 as described and illustrated in Letters Patent No. 329,510, granted tome November 3, 1885.

All the means above described for supporting and adjusting the lamp arefully set forth in my patent referred to, and operatein the same manner.Therefore it will not be necessary to describe said devices any furtherherein.

E represents the connectinghook, interposed between the end of thelampsupporting cord and the lamp. It is made in substantially the formshown in Figs. 2 and 3-4. 6., with loops 6 c at either end. Molded aboutand around one of theseloops, preferably the upper and larger one, is aglass body, F, of the form shown or any other suitable or preferredform,the object being to insulate the lamp-supporting cord from the lampitself and the currentpassing through thehook Eand its loop 6.

Another and most important objectof my invention is the provision forthe safety of the lamp in the event of the breakage of the glass orinsulating material surrounding the loop portion of the hook. Thesupporting-cord C, passing through the perforation f of the insulatingbody or materiahat the same time passes through the loop 6 of the wirehook E, and should the glass or insulating material F be shattered andfall from said hook E the cord or wire 0 will still encircle and supportthe loop 6, and thereby the hook E and its pendent lamp. The lamp isattached to the insulated hook E by means of thelower loop, 6, whichpasses through a staple or hook secured to the upper portion of thelamp.

I have said above that I employed glass to insulate the hook E from thecord or wire (3, and that the glass was molded around the same and theloop 6; but it will be obvious that any known or equivalent material forinsulating obtain, and that whether molded or wrapped or otherwiseplaced thereon. Therefore I do not wish to be limited to the onematerial or to the precise form of insulator-hook shown.

Having now described my invention, 1 claim as new- 1. The hook E c 6,having one of its loops, 6, insulated by surrounding the same with aninsulating material in such manner as to form or leave a hole orperforation,f, for the atpurposes will accomplish the result I desire toIOO tachment 0f the supporting wire or cord, subing-cord, said loopbeing provided with the stantially as described. insulating-body F,having the perforation or 2. The hookEee' and thesupporting Wire orholef, all substantially as and for the purcord passing through the loopor eye 6 thereof, pose described. 15

" 5 but insulated therefrom by means of glass or In testimony whereof Ihave hereunto set other insulating substance, molded or formed my hand.

around and inclosing said loop or eye 6, substantially as described.CHARLES TRAVIS 3. The supporting and adjusting devices de- Witnesses: toscribed, in combination with the hook E e e, G. B. GOFFIN,

interposed between the lamp and its support- S. S. LEONARD.

